(1). The HEPA-style filter uses E12 HEPA material, and captures up to 99.5% dust, , and particles. (2). Superior pick-up of pet hair, dirt, dust, and debris and works on floor types-hardwood, carpet, and tile. (3). The side Brush gives you extra assurance that you're right up against walls and deep into corners for superior cleaning coverage. (4). The parts and accessories are made of environmental-friendly materials and are almost maintenance free. (5). To keep your robot running at , the parts are recommended to be replaced every 2-3 months. It is easy to be replaced and installed on your robot vacuums. Roller Brush: (1). Using the deign of mixing the bristle brush and blade brush together,which comes with lower noise and much cleaner. (2). The roller brush use a wave-like design, which can gather the dust and dirty particles together and send them to the dustbin box easily. Compatible Model: (1). for STYJ02YM/STYTJ02YM (2). for V2 PRO V-RVCLM21B (3). for 3290 3390 3490 3690 colour: as shown Material: plastic Package Contents: 1 x Rolling brush 6 x Filter 2 x Drag 6 x Side brush 1 x Cover plate 1 x Cleaning tool Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.